diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 0a5f5ee..57cd9b6 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,6 +1,6 @@
 add_subdirectory(timestamp)
 add_subdirectory(tuple)
 add_subdirectory(packet)
-add_subdirectory(dupkt)
+add_subdirectory(dupkt_filter)
 add_subdirectory(session)
 add_subdirectory(stellar)
\ No newline at end of file
diff --git a/src/dupkt/CMakeLists.txt b/src/dupkt_filter/CMakeLists.txt
similarity index 100%
rename from src/dupkt/CMakeLists.txt
rename to src/dupkt_filter/CMakeLists.txt
diff --git a/src/dupkt/dupkt_filter.cpp b/src/dupkt_filter/dupkt_filter.cpp
similarity index 100%
rename from src/dupkt/dupkt_filter.cpp
rename to src/dupkt_filter/dupkt_filter.cpp
diff --git a/src/dupkt/dupkt_filter.h b/src/dupkt_filter/dupkt_filter.h
similarity index 90%
rename from src/dupkt/dupkt_filter.h
rename to src/dupkt_filter/dupkt_filter.h
index d690297..075aca5 100644
--- a/src/dupkt/dupkt_filter.h
+++ b/src/dupkt_filter/dupkt_filter.h
@@ -6,6 +6,8 @@ extern "C"
 {
 #endif
 
+// Duplicated Packet Filter for IPv4-based TCP Packet
+
 #include "packet.h"
 
 struct dupkt_filter *dupkt_filter_create(uint8_t enable, unsigned int capacity, double error_rate, int timeout_s);
diff --git a/src/dupkt/test/CMakeLists.txt b/src/dupkt_filter/test/CMakeLists.txt
similarity index 100%
rename from src/dupkt/test/CMakeLists.txt
rename to src/dupkt_filter/test/CMakeLists.txt
diff --git a/src/dupkt/test/gtest_dupkt_filter.cpp b/src/dupkt_filter/test/gtest_dupkt_filter.cpp
similarity index 100%
rename from src/dupkt/test/gtest_dupkt_filter.cpp
rename to src/dupkt_filter/test/gtest_dupkt_filter.cpp